Charging electric vehicles at night generates less ozone than tapping into the grid during the daytime. Karen Hopkin reports.

根据卡伦·霍普金的报告，在夜间为电动车充电能比白天少排放臭氧。

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The difference in weight is far less than the difference produced by charging the battery, or wiping dust off the screen.

这种重量上的差异要远远小于由充电或是擦拭屏幕灰尘引起的差异。

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Since 2002, when the paper began charging online, its average daily circulation has dropped by less than 1% a year-rather better than most.

2002年，报纸开始对在线阅读收费，从此，每年平均日发行量只减少了不到1%——比别家都低。

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If real, the redesign could lead to one less hassle for charging and syncing.

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Presumably, in the name of harm reduction, public systems might try charging less for the earlier semesters and more for the later ones.

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Reflecting the overall trend of Americans charging less, that amount is actually 17% less than 2009, says Bill Hardekopf, Editor of LowCards.com, an independent credit card rating site.

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